Sunday, August 29, 2021

Tomcat Cookbook

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 #How to find process id of a running program on a given port sudo lsof   -i:8080 sudo lsof   -i:443
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Sunday, August 8, 2021

SSH Essentilas

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Secure shell:  Connect Remote server using SSH protocol -check existing key :ls -al ~/.ssh // It shows existing public and private key pair...
Wednesday, December 16, 2020

Reading the GC Events

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Real: wall clock time – time from start to finish of the call. User: the amount of CPU time spent in user-mode code (outside the kernel) w...

Elastic Search Cluster Management

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Steps to do rolling restart of ES cluster: sudo su root docker ps -a docker stop/start <I_ID> docker exec -it <IMG_Id> /bin/bash...
Wednesday, December 9, 2020

Streams Cookbook

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1.  Stream to Map Map<Integer, String> result3 = list.stream().collect( Collectors.toMap(x -> x.getId(), x -> x....
Friday, July 10, 2020

Java Design : Naming Standards

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Creational Structural Behavioural Abstract Factory Assember Accumumator ...
Thursday, July 9, 2020

Dynamic handling Spring Flow

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Dynamically create your own BeanDefinition BeanDefinitionRegistryPostProcessor has a hook on the BeanDefinitionRegistry @Component public cl...
Sunday, June 7, 2020

Terraform : IAC series II

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About Terraform: A declarative language,  not a programming language. Which keeps its state recorded when we run again it compares the new a...

Terraform : IAC series I

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This blog covers the basics of terraform a declarative language for managing infrastructure as code.  Download link:  brew install terraform...
Wednesday, June 3, 2020

AWS Assoiate Notes

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VPC: Egress-only internet gateways: - allows outbound communication over IPv6 from instances in your VPC to the internet, and preven...